Elastic member, limiting member, limiting guide device, and electric automobile comprising same

ABSTRACT

Provided are an elastic member, a limiting member, a limiting guide device, and an electric automobile comprising same. The limiting guide device comprises an elastic member ( 201 ) and an limiting member ( 101 ) which match each other. The elastic member ( 201 ) is fixed to an inner side wall of a quick-change support ( 200 ) of the electric automobile or an outer side wall of a quick-change battery box ( 100 ) of the electric automobile, and the elastic member ( 201 ) is used for elastically limiting the movement of the quick-change battery box ( 100 ) in the quick-change support ( 200 ). The elastic member ( 201 ) can elastically limit the movement of the quick-change battery box ( 100 ) in the quick-change support ( 200 ), thereby preventing the battery box ( 100 ) from being damaged.

TECHNICAL FIELD

The invention relates to the field of electric vehicles, in particularto an elastic member, a limiting member, a limiting guide device and anelectric vehicle comprising the same.

BACKGROUND TECHNIQUE

At present, the emission of vehicle exhaust is still an important factorin environmental pollution. In order to control vehicle exhaust, peoplehave developed natural vehicles, hydrogen fuel vehicles, solar vehiclesand electric vehicles to replace fuel vehicles.

One of the most promising applications is electric vehicles.

Current electric vehicles mainly include two types: direct charge typeand quick change type.

Quick-change electric vehicles do not need to be charged for a longtime. After the battery is exhausted, the electric vehicle can continuedriving by quickly replacing the battery pack, which is more suitablefor public transportation.

There are currently two commonly used ways to replace the battery of aquick-change electric vehicle, One is to insert the quick-change batterybox into the quick-change bracket of the electric vehicle from the sideof the electric vehicle for installation, and the other is to install itfrom the bottom of the electric vehicle. Push the quick-change batterybox into the quick-change bracket from bottom to top, and fix it withthe quick-change bracket.

For the latter installation method, when the quick-change battery box isassembled with the quick-change bracket from bottom to top, precisepositioning is required to avoid installation failure. However, even ifthe quick-change battery box and the quick-change bracket are preciselypositioned Positioning, in the actual installation process, a smallamount of deviation cannot be avoided when the quick-change battery boxis inserted. Therefore, the quick-change battery box may still collidewith the side wall of the quick-change bracket during the loadingprocess, resulting in quick-change battery box damage.

In addition, although the quick-change battery box and the quick-changebracket are installed, the quick-change battery box and the quick-changebracket will be positioned using sensors, but when the quick-changebattery box is installed in the quick-change bracket, positioning isstill required. The guide mechanically guides the insertion of thequick-change battery box into the quick-change bracket.

CONTENTS OF THE INVENTION

The technical problem to be solved by the present invention is toprovide an elastic member, a limiting member, a limiting guide deviceand an electric vehicle including the same in order to overcome theabove-mentioned defects of the prior art.

The present invention solves the above technical problems through thefollowing technical solutions:

An elastic member, the elastic member is fixed on the inner wall of thequick-change bracket of the electric vehicle or the outer wall of thequick-change battery box of the electric vehicle, and the elastic memberis used for elastically limiting the movement of the quick-changebattery box in the quick-change bracket move.

The technical effect of the solution is that the elastic member canelastically limit the movement of the quick-change battery box in thequick-change bracket, thereby avoiding damage to the battery box.

Preferably, the elastic member includes a mounting portion and aprotrusion, the mounting portion is used to mount the elastic member onthe inner side wall of the quick-change bracket or the outer side wallof the quick-change battery box, and the protrusion is opposite to theThe installation portion protrudes toward a direction away from theinner side wall of the quick-change bracket or the outer side wall ofthe quick-change battery box.

The technical effect of this further proposal is that the elastic memberrealizes its elastic cushioning function through the protrusion, and thecushioning is more reliable.

Preferably, the protruding portion has an upper inclined surface and alower inclined surface that are arranged obliquely from the protrudingend of the protruding portion toward the mounting portion.

The technical effect of this further development is that betterelasticity and guidance are achieved by the inclined surface.

Preferably, the protruding part has a left inclined surface and a rightinclined surface which are arranged obliquely from the protruding end ofthe protruding part toward the installation part.

The technical effect of this further development is that betterelasticity and guidance are achieved by the inclined surface.

Preferably, the elastic member includes at least two of the protrusionsdistributed along the vertical direction.

The technical effect of this further solution is that by providing aplurality of protrusions, the elasticity thereof can be better ensured.

Preferably, the mounting portion is disposed between two adjacentprotrusions.

The technical effect of this further solution is that the structure issimplified and the installation is easy by arranging the installationpart between the protrusions.

Preferably, at least one of the upper end and the lower end of theelastic member is a free end.

The technical effect of this further solution is that overpositioning ofthe elastic member is avoided.

Preferably, the elastic member further includes an engaging portion, theengaging portion is provided on the top or bottom of the elastic member,and the engaging portion is used for connecting with the inner side wallof the quick-change bracket or the quick-change battery of the electricvehicle. The outer side walls of the box are snapped together.

The technical effect of this further solution is: the installation andpositioning of the elastic member is facilitated by the engagingportion.

Preferably, the engaging portion is formed to bend toward the inner sidewall of the quick-change bracket of the electric vehicle or the outerside wall of the quick-change battery box of the electric vehicle.

The technical effect of this further solution is to provide a bettersnap-fit form.

Preferably, the elastic member is fixed to the inner wall of thequick-change bracket or the outer wall of the quick-change battery boxof the electric vehicle through a threaded member.

The technical effect of this further solution is: it is convenient tofix the elastic member.

A limiting member, the limiting member is used to cooperate with theabove-mentioned elastic member, the elastic member is arranged on one ofthe inner wall of the quick-change bracket and the outer wall of thequick-change battery box, the limiting The component is disposed on theother of the inner side wall of the quick change bracket and the outerside wall of the quick change battery box.

The technical effect of the solution is: elastically restricting themovement of the quick-change battery box in the quick-change bracket,thereby avoiding damage to the battery box.

Preferably, the limiting member includes a positioning surface and aguiding surface, the positioning surface is used to abut against theelastic member, and the guiding surface extends outward from thepositioning surface.

The technical effect of this further solution is that the elastic memberis facilitated to be guided via the guide surface.

Preferably, the limiting member includes at least two guiding surfaces,the two guiding surfaces are respectively arranged opposite to the twosides of the positioning surface, and extend along the verticaldirection, between the guiding surface and the positioning surface Asliding passage for the elastic member to slide into is formed betweenthem.

The technical effect of this further solution is that it is furtherconvenient to guide the elastic member through the guide surface.

Preferably, a connection surface is provided between the guide surfaceand the positioning surface, and the connection surface is an arc-shapedsurface.

The technical effect of this further solution is: easy manufacture.

A position-limiting guide device, which includes the above-mentionedelastic member and the above-mentioned position-limiting member.

The technical effect of the solution is: elastically limit and guide themovement of the quick-change battery box in the quick-change bracket,thereby avoiding damage to the battery box.

A quick-change bracket, the inner wall of the quick-change bracket isprovided with one or more elastic members or limiting members asdescribed above.

A quick-change battery box, the outer wall of the quick-change batterybox is provided with one or more elastic members as described above orthe limiting member as described above.

An electric vehicle, which includes the above-mentioned quick-changebracket and the above-mentioned quick-change battery box, when theelastic member is arranged on one of the quick-change bracket and thebattery box, the position-limiting A component is provided on the otherof the quick change bracket and the battery box.

Preferably, when the quick-change battery box is loaded into thequick-change bracket, the elastic member is compressed by the limitingmember to deform.

The technical effect of this further solution is: the elastic limitationbetween the quick-change battery box and the quick-change bracket isrealized through the deformation of the elastic member.

Preferably, the pre-compressed dimension of the elastic member is e, thethickness of the elastic member is c, and the groove depth of thelimiting member is d, wherein c=d+e.

Wherein, the pre-compressed size is the compressed size of the elasticmember when the quick-change battery box is loaded into the quick-changebracket.

Preferably, the distance between the side of the elastic member and theguide surface is a reserved gap t, the width of the elastic member is a,the horizontal replacement stroke of the quick-change battery box is s,and the The distance between the guide surfaces is b, where b=a+2t+s.

The technical effect of this further solution is: b=a+2t+s can preventthe quick-change battery box 100 from being installed on thequick-change bracket 200 and locked horizontally, the elastic member 201and the side wall portion 107 of the limiting member 101 collision orinterference.

Preferably, when the quick-change battery box is loaded into thequick-change bracket, the gap between the outer sidewall of thequick-change battery box and the inner sidewall of the quick-changebracket is K, and the limit member Thickness is F, K−F is greater than 0and less than 2.

The technical effect of this further solution is to reserve a gapbetween the quick-change battery box and the limiting member to avoidcollision and interference.

Preferably, the battery box is provided with a lock shaft, thequick-change bracket is provided with a lock seat, and the lock seat isprovided with a lock groove for engaging with the lock shaft, and thelock groove includes a rising section and a A locking section, thelocking section extends horizontally from the ascending section towardthe locking direction, when the lock shaft is located in the ascendingsection, the elastic member and the limiting member face the lockingdirection The distance of the guide surface is greater than the distancethat the lock shaft moves from the ascending section to the lockedposition in the locking section.

The technical effect of this further solution is to prevent the elasticmember from colliding or interfering with the side wall of the limitingmember when the quick-change battery box is mounted on the quick-changebracket and locked horizontally.

The positive progressive effect of the present invention is that theelastic member can elastically limit the movement of the battery box inthe quick-change bracket, thereby avoiding damage to the battery box.

The limiting member, the limiting guide, the quick-change bracket, thequick-change battery box and the electric vehicle have the same effectas above.

DESCRIPTION OF DRAWINGS

FIG. 1 is a schematic diagram of an assembly structure of a quick-changebattery box and a quick-change bracket according to an embodiment of thepresent invention.

FIG. 2 is a perspective view of a quick-change battery box according toan embodiment of the present invention.

FIG. 3 is a schematic perspective view of the three-dimensionalstructure of the quick-change bracket according to an embodiment of thepresent invention.

FIG. 4 is a schematic perspective view of the elastic member viewed fromthe front according to an embodiment of the present invention.

FIG. 5 is a schematic perspective view of the elastic member viewed fromthe rear according to an embodiment of the present invention.

FIG. 6 is a front structural schematic diagram of an elastic memberaccording to an embodiment of the present invention.

FIG. 7 is a rear structural schematic diagram of an elastic memberaccording to an embodiment of the present invention.

FIG. 8 is a schematic side view of an elastic member according to anembodiment of the present invention.

FIG. 9 is a schematic perspective view of a three-dimensional structureof a limiting member according to an embodiment of the presentinvention.

FIG. 10 is a front structural schematic view of a limiting memberaccording to an embodiment of the present invention.

FIG. 11 is a rear structural schematic view of a limiting memberaccording to an embodiment of the present invention.

FIG. 12 is a schematic top view of a limiting member according to anembodiment of the present invention.

FIG. 13 is a schematic top view of the elastic member and the limitingmember in a contact state according to an embodiment of the presentinvention.

FIG. 14 is a schematic cross-sectional structure diagram of an elasticmember and a limiting member in an abutting state according to anembodiment of the present invention.

FIG. 15 is a schematic structural diagram of a lock slot according to anembodiment of the present invention.

FIG. 16 is a first schematic diagram showing the relative change stateof the matching relationship between the elastic member and the limitingmember and the matching relationship between the lock seat and the lockshaft according to an embodiment of the present invention.

FIG. 17 is a second schematic view showing the relative change state ofthe matching relationship between the elastic member and the limitingmember and the matching relationship between the lock seat and the lockshaft according to an embodiment of the present invention.

FIG. 18 is a third schematic diagram showing the relative change stateof the matching relationship between the elastic member and the limitingmember and the matching relationship between the lock seat and the lockshaft according to an embodiment of the present invention.

FIG. 19 is a fourth schematic view showing the relative change state ofthe matching relationship between the elastic member and the limitingmember and the matching relationship between the lock seat and the lockshaft according to an embodiment of the present invention.

Explanation of reference signs:

-   -   Quick change battery box 100    -   Limiting member 101    -   Locating surface 103    -   guide surface 104    -   connection surface 105    -   bottom wall 106    -   side wall 107    -   sliding channel 108    -   Shaft lock 111    -   Quick change bracket 200    -   elastic member 201    -   Installation Department 203    -   Mounting hole 204    -   protrusions 211    -   Upper inclined surface 212    -   Lower slope 213    -   Left inclined face 214    -   Right inclined face 215    -   free end 218    -   Snapping part 219    -   lock seat 230    -   Lock slot 231    -   Ascent 233    -   Locking section 234    -   Locked position 236    -   Arc 238    -   Lower arc 241    -   Upper arc 242    -   Curved guide surface 243    -   Clearance 245

Detailed Ways

The present invention will be further described by means of embodimentsbelow in conjunction with the accompanying drawings, but the presentinvention is not limited to the scope of the embodiments.

This embodiment provides a kind of electric vehicle, and this electricvehicle removes the old battery that has been used up on it (powerexhausted or power consumption to a certain extent), and fully chargedor partially charged (has been charged to can be used) The degree) ofthe new battery is installed on the electric vehicle, and realizesbattery life.

The electric vehicle includes a quick-change battery box 100 shown inFIG. 2 and a quick-change bracket 200 shown in FIG. 3 .

As shown in FIG. 1 , the quick-change battery box 100 is mounted on aquick-change bracket 200.

By attaching and detaching the quick-change battery box 100 relative tothe quick-change bracket 200, the replacement of the old and newbatteries as above is realized.

FIGS. 2 and 3 illustrate an embodiment of the quick-change battery box100 and the quick-change bracket 200 according to this embodiment, butit does not mean that the present invention can only be applied to thequick-change battery box 100 with the shape or structure shown in FIGS.2 and 3 Replace the battery box 100 and the quick-change bracket 200. Inother embodiments, the quick-change battery box 100 and the quick-changebracket 200 can also have other shapes or structures without departingfrom the gist of the present invention.

The quick-change battery box 100 in this application refers to areplaceable battery formed in the form of a battery pack, notnecessarily a box-type structure.

The quick-change battery box 100 and the quick-change bracket 200 arelimited and guided in X, Y, and Z directions by means of aposition-limiting guide device.

The limiting guide device includes an elastic member 201 and a limitingmember 101.

As shown in FIGS. 2 and 3 , in this embodiment, the limiting member 101is disposed on the outer wall of quick-change battery box 100 and theelastic member 201 is disposed on the inner wall of the quick-changebracket 200.

In other embodiments, it can also be set as follows: the limiting member101 is arranged on the inner wall of the quick-change bracket 200, andthe elastic member 201 is arranged on the outer wall of the quick-changebattery box 100.

As shown in FIGS. 4-8 , the elastic member 201 is used to elasticallyrestrict the movement of the quick-change battery box 100 in thequick-change battery box 200 to avoid damage to the quick-change batterybox 100.

The elastic member 201 includes a mounting portion 203 and a protrusion211. The mounting portion 203 is used to mount the elastic member 201 onthe inner side wall of the quick change bracket 200. The protrusion 211faces away from the inner side wall of the quick change bracket 200relative to the mounting portion 203. Extend the bump.

A groove is formed on the side of the protrusion 211 facing the quickchange bracket 200. When the elastic member 201 is mounted on the quickchange bracket 200, there is a gap defined by the groove between theprotrusion 211 and the inner side of the quick change bracket 200.

When the battery box is installed in the quick-change bracket, theprotrusion deforms toward the inner side wall of the quick-changebracket.

The protruding part 211 has an upper inclined surface 212 and a lowerinclined surface 213 which are oppositely disposed from the protrudingend of the protruding part 211 to the installation part 203.

The protruding portion 211 also has a left inclined surface 214 and aright inclined surface 215 oppositely disposed from the protruding endof the protruding portion 211 toward the installation portion 203.

These inclined surfaces make the protruding portion 211 have betterelasticity and better guiding.

The directions of these inclined surfaces only refer to their relativedirections, not that they must be placed on the left, right or up anddown of the viewer.

By setting up and down inclined surfaces and left and right inclinedsurfaces on the protruding part 211, when the battery box is installedon the quick-change bracket, the contact and guidance between theelastic member and the limiting member are facilitated, and the frictionduring the relative movement between the two is reduced. Resistance,improve the efficiency of battery box loading and unloading.

In this embodiment, the elastic member 201 includes two protrusions 211distributed along the vertical direction (Z direction).

The mounting portion 203 is disposed between two adjacent protrudingportions 211.

By providing a plurality of protrusions 211, the elasticity thereof canbe better ensured.

However, the present invention is not limited thereto. The number ofprotrusions 211 can be set according to actual needs, one or more thanthree, and the number of protrusions 211 does not affect the realizationof its functions.

In this embodiment, the upper end of the elastic member 201 is a freeend 218, and the free end 218 is connected to one side of the upperinclined surface of the protrusion.

The free end 218 may be a plate-shaped structure that is attached to theinner surface of the quick-change bracket, or the free end 218 may be aplate-shaped structure that has a certain gap with the quick-changebracket.

The lower end of the elastic member 201 is provided with an engagingportion 219 for engaging with an inner side wall of the quick changebracket 200.

As shown in FIG. 6 , the engaging portion 219 is formed to bend towardthe inner side wall of the quick change bracket 200 of the electricvehicle.

Optionally, the engaging portion 219 can be formed into a hook shape,which hooks the lower surface of the inner side wall of the quick-changebracket 200, thereby facilitating the positioning and installation ofthe elastic member 201 relative to the quick-change bracket 200, andfurther restricting the relative movement of the elastic member 201.Movement of the quick change bracket 200.

The joint between the engaging portion 219 and the protruding portion211 is an arc surface 238. When the position limiting member 101 snapsin from below the elastic member 201, the arc surface 238 facilitatesthe locking of the position limiting member 101 and prevents the bottomstructure of the elastic member 201 from Interference with the upwardmovement of the stop member 10.

In other embodiments, the engaging portion 219 may also form othershapes capable of engaging with the inner sidewall of the quick changebracket 200.

Optionally, a corresponding groove or the like may be provided on theinner sidewall of the quick change bracket 200 to engage with theengaging portion 219.

In another embodiment, the engaging portion 219 may be disposed on theupper end of the elastic member 201, and the lower end of the elasticmember 201 is the free end 218.

In yet another embodiment, the upper and lower ends of the elasticmember 201 can be provided with engaging portions 219.

Optionally, the engaging portion 219 may not be provided, so that theupper and lower ends of the elastic member 201 are both free ends 218.

The mounting portion 203 is provided with a mounting hole 204, and theelastic member 201 is fixed to the inner side wall of the quick changebracket 200 through a threaded member.

Optionally, other ways can also be used to fix the installation part 203and the quick change bracket 200.

As shown in FIGS. 8-11 , the limiting member 101 is used to cooperatewith the above elastic member 201.

The limiting member 101 includes a positioning surface 103 and a guidingsurface 104, the positioning surface 103 is used to abut against theelastic member 201. and the guiding surface 104 protrudes outwardly fromthe positioning surface 103.

In this embodiment, the limiting member 101 includes two guide surfaces104, the two guide surfaces 104 are respectively arranged opposite tothe two sides of the positioning surface 103, and extend along thevertical direction. The sliding channel 108 for the elastic member 201to slide into.

Optionally, the limiting member 101 may also include more than threeguiding surfaces 104 to facilitate the guiding of the elastic member201.

A connecting surface 105 is provided between the guiding surface 104 andthe positioning surface 103. The connecting surface 105 is an arc-shapedsurface to facilitate processing and make the guiding surface 104 extendto the positioning surface 103 smoothly.

The limiting member 101 includes a bottom wall portion 106 and side wallportions 107 disposed on two sides of the bottom wall portion 106, andthe guide surfaces 104 are two opposite surfaces of the side wallportion 107.

The two side wall portions 107 and the bottom wall portion 106 enclose aslide channel 108 extending in the Z direction.

The bottom and top of the side wall portion 107 along the verticaldirection are provided with a lower arc surface 241 and an upper arcsurface 242 (as shown in FIG. 8 ), which are used to guide the limitingmember 101 to abut against the elastic member 201 on the quick changebracket 200 Positioning is convenient for the limiting member 101 toenter the gap between the battery box 100 and the quick change bracket200.

The bottom and the top of the bottom wall portion 106 are provided witharc-shaped guiding surfaces 243 to facilitate mutual contact with theelastic member 201 and guide it to abut against the positioning surface103.

The lower arc surface 241 not only forms an arc extending along the Ydirection in FIG. 8 , but also forms an arc extending along the Xdirection.

The same is true for the upper arc 242.

By setting each edge or angle of the limiting member 101, that is, theside wall portion 107 and the bottom wall portion 106, as an arcstructure, on the one hand, it facilitates the contact and guidancebetween the limiting member 101 and the elastic member 201, and reducesthe gap between the two. On the other hand, it is convenient for thelimit member 101 to enter the narrow space between the battery box 100and the quick change bracket 200, so as to prevent the limit member 101from being unable to enter the quick change bracket 200 due to a smallposition deviation. Change the gap between the bracket 200 and thebattery box 100, resulting in low installation efficiency of the batterybox 100.

As shown in FIG. 9 , one side of the side wall portion 107 faces thebottom wall portion 106, and the other side of the bottom wall portion106 is hollowed out to reduce the weight of the limiting member 101.

A gap 245 is formed between a portion of the bottom wall facing theouter wall of the battery box and the outer wall (see FIG. 13 ).

As shown in FIGS. 11-13 , when the quick-change battery box 100 isloaded into the quick-change bracket 200, the elastic member 201 issqueezed by the limiting member 101 to deform.

During the movement of the limiting member 101 in the vertical direction(Z direction), the upper and lower slopes of the protrusion 211 of theelastic member 201 are used to guide the limiting member 101 and theprotrusion 211 of the elastic member 201 to squeeze anti limit, reducingthe limit. The friction and wear of the protrusion 211 during the up anddown movement of the position member 101 makes the position limit member101 move up and down smoothly, and the engaging part of the elasticmember 201 is bent toward the direction of the quick change bracket,which facilitates the upward movement of the position limit member 101and the elastic member 201 The protruding portion 211 squeezes the limitto avoid interfering with the upward movement of the limit member 101.

The left and right inclined surfaces of the elastic member 201 cooperatewith the side wall portion 107 of the limiting member 101 to facilitatethe elastic member to enter into the limiting member.

The pre-compressed size of the elastic member 201 is e (not shown in thefigure), the thickness of the elastic member 201 (original thicknessbefore deformation) is c (see FIG. 7 ), the depth of the groove of thelimiting member 101 is d (see FIG. 11 ), Wherein, c=d+e.

The pre-compressed dimension e is the compressed dimension of theelastic member 201 when the quick-change battery box 100 is loaded intothe quick-change bracket 200.

The value range of e is 0.4-1 mm.

When e is within this range, the elastic member 201 can effectivelyimprove the driving effect of the vehicle without affecting theefficiency of the battery exchange, and avoid Y-direction shaking of thebattery box relative to the quick-change bracket.

When the quick-change battery box 100 is loaded into the quick-changebracket 200, the gap between the outer sidewall of the quick-changebattery box 100 and the inner sidewall of the quick-change bracket 200is K, the thickness of the limiting member 101 is F, and K−F is greaterthan 0 and Less than 2, preferably K−F is equal to 1.

K−F in this range facilitates cost control as well as providingreliability and durability of installation.

When K−F is less than 1, the precision control requirements of eachmating surface of the limiting member 101 and the elastic member 201 arerelatively high, and the cost is high. If K−F is greater than 1, thebattery pack is likely to shake when the vehicle is running, whichaffects the reliability of installation. And the durability of thebattery pack is adversely affected.

As shown in FIG. 11 , in the initial state, that is, when the elasticmember 201 is inserted into the limiting member 101 but does not move inthe X direction, the distance between the outermost edge of the side ofthe elastic member 201 and the nearest guide surface 104 The distancebetween them is the reserved gap t, the width of the elastic member 201is a, the horizontal switching stroke of the quick-change battery box100 is s, and the distance between the guide surfaces 104 is b, whereb=a+2t+s.

b=a+2t+s can prevent the elastic member 201 from colliding orinterfering with the side wall 107 of the limiting member 101 when thequick-change battery box 100 is mounted on the quick-change bracket 200and moved horizontally to the locking position.

As shown in FIG. 12 , the battery box is provided with a lock shaft 111(see FIG. 2 ), and the quick change bracket 200 is provided with a lockseat 230 (see FIG. 3 ), and the lock seat 230 is provided with a lockfor engagement with the lock shaft 111 Slot 231.

As shown in FIG. 15 , the locking groove 231 includes a rising section233 and a locking section 234, and the locking section 234 extendshorizontally from the rising section 233 toward a locking direction.

The lock shaft 111 is fixed to the quick-change battery box 100. Withthe vertical movement of the quick-change battery box 100, the lockshaft 111 enters the rising section 233 of the lock groove 231vertically from the opening below the lock groove 231, and moves alongthe rising section 233. After the lock shaft 111 rises to a positionflush with the locking section 234, the lock shaft 111 moveshorizontally along the locking section 234 with the horizontal movementof the quick-change battery box 100 toward the The locking positionmoves until the locking shaft 111 moves to the locking position, and thelocking shaft 111 is locked in the locking position of the lockinggroove 231, so that the quick-change battery box 100 is locked on thequick-change bracket 200.

The horizontal movement distance of the lock shaft 111 from theascending section 233 to the locking position is the horizontal powerexchange stroke.

In FIG. 14 , the locked position 236 is indicated by a dotted circle. Inthe locked state, the lock shaft 111 is at the position of the dottedcircle.

When the lock shaft 111 is located in the ascending section 233, thedistance c between the elastic member 201 and the guide surface 104 ofthe limiting member 101 facing the locking direction is greater than thetime when the lock shaft 111 moves from the ascending section 233 to thelocking position in the locking section 234. distance s, so as to avoidcollision or interference between the elastic member 201 and the sidewall portion 107 of the limiting member 101 due to the locking action ofthe quick-change battery box 100.

Hereinafter, according to FIGS. 16-19 , changes in the cooperationrelationship between the elastic member 201 and the limiting member 101along with the cooperation relationship between the lock shaft 111 andthe lock seat 230 will be described.

16-19 sequentially illustrate four representative states from when thebattery pack 100 is loaded into the quick-change bracket 200 until it islocked.

As shown in FIG. 16 , when the battery pack 100 is loaded into thequick-change bracket 200 from bottom to top, the elastic member 201 onthe quick-change bracket 200 is about to be inserted into the limitingmember 101 on the battery pack 100, while the lock shaft 111 has not yetbeen inserted. In the lock groove 231 of the lock seat 230.

At this time, the horizontal relative position of the limiting member101 and the elastic member 201, that is, the relative position in the Xdirection satisfies the relationship b=a+2t+s.

As shown in FIG. 17 , when the battery pack 100 continues to moveupwards relative to FIG. 16 , the elastic member 201 on the quick-changebracket 200 is inserted into the limiting member 101 on the battery pack100, and the lock shaft 111 is inserted into the lock groove of the lockseat 230 233 of the ascending segment of 231.

At this time, the horizontal relative position of the limiting member101 and the elastic member 201, that is, the relative position in the Xdirection still satisfies the relationship b=a+2t+s.

But in the Y direction, the elastic member 201 is extruded, and it is inthe extruded state as shown in FIG. 14 , and the deformation amount ofthe elastic member 201 satisfies the formula: c=d+e.

The gap between the limiting member 101 and the inner sidewall of thequick change bracket 200 satisfies the relationship K−F greater than 0and less than 2, preferably, K−F is equal to 1.

As shown in FIG. 18 , at this time, the battery pack 100 has moved tothe highest point in the vertical direction (Z direction) relative toFIG. movement in the vertical direction.

The horizontal relative position of the limiting member 101 and theelastic member 201 is, the relative position in the X direction stillsatisfies the relationship b=a+2t+s.

The deformation amount of the elastic member 201 satisfies the formula:c=d+e,

The gap between the limiting member 101 and the inner sidewall of thequick change bracket 200 satisfies the relationship K−F greater than 0and less than 2, preferably, K−F is equal to 1.

As shown in FIG. 19 , the battery pack 100 is displaced in the Xdirection relative to FIG. 18 .

The locking shaft 111 moves a distance s in the locking section 234 ofthe locking groove 231 in the X direction relative to FIG. 18 , andstops at the locking position 236.

At the same time, the limiting member 101 moves a distance s along the Xdirection along with the displacement of the battery pack 100 in the Xdirection, since the distances between the two side edges of the elasticmember 201 and the guide surface 104 of the limiting member 101 arerespectively t and t+s, and the distance t+s is set on the X1 directionside of the elastic member 201 in FIG. In FIG. 19 , the gap on the X2direction side of the elastic member 201 becomes t+s, and the gap on theX1 direction side becomes t, which ensures the distance between the twoside edges of the elastic member 201 and the guide surface 104 of thelimiting member 101 When the battery pack 100 is installed on thequick-change bracket 200, it is always greater than t, so as to ensurethat the elastic member 201 and the limiting member 101 will not collideor be stuck with each other, hindering the mutual cooperation betweenthe lock shaft 111 and the lock seat 230

The X, Y, and Z directions in the figure are for the convenience ofillustrating the orientation of components in different figures, andtherefore, should not be construed as limiting the present invention.

In describing the present invention, it is to be understood that theterms “upper”, “lower”, “front”, “rear”, “left”, “right”, “vertical”,“horizontal”, “top”. The orientation or positional relationshipindicated by “bottom”, “inner” and “outer” are based on the orientationor positional relationship of the device or element in actual use, andare only for the convenience of describing the present invention andsimplifying the description, rather than indicating or implying Anydevice or element must at all times have a specific orientation, beconstructed and operate in a specific orientation and therefore shouldnot be construed as limiting the invention in this respect.

Although the specific implementation of the present invention has beendescribed above, those skilled in the art should understand that this isonly an example, and the protection scope of the present invention isdefined by the appended claims.

Those skilled in the art can make various changes or modifications tothese embodiments without departing from the principle and essence ofthe present invention, but these changes and modifications all fallwithin the protection scope of the present invention.

1. An elastic member, characterized in that the elastic member is fixedto the inner wall of the quick-change bracket of the electric vehicle orthe outer wall of the quick-change battery box of the electric vehicle,and the elastic member is used to elastically limit the quick-changebattery box Change the movement within the bracket.
 2. The elasticmember according to claim 1, characterized in that, the elastic membercomprises a mounting portion and a protrusion, and the mounting portionis used for mounting the elastic member on the inner side wall of thequick-change bracket or on the side of the quick-change battery box Onthe outer side wall, the protrusion extends and protrudes in a directionaway from the inner side wall of the quick-change bracket or the outerside wall of the quick-change battery box relative to the installationportion.
 3. The elastic member according to claim 2, wherein theprotruding portion has an upper inclined surface and a lower inclinedsurface oppositely disposed from the protruding end of the protrudingportion toward the mounting portion.
 4. The elastic member according toclaim 2, wherein the protruding portion has a left inclined surface anda right inclined surface oppositely disposed from the protruding end ofthe protruding portion toward the direction of the mounting portion. 5.The elastic member according to claim 2, wherein said elastic membercomprises at least two said protrusions distributed along a verticaldirection.
 6. The elastic member according to claim 5, characterized inthat, the installation portion is arranged between two adjacentprotrusions.
 7. The elastic member according to claim 2, wherein atleast one of the upper end and the lower end of the elastic member is afree end.
 8. The elastic member according to claim 1, characterized inthat, the elastic member further comprises an engaging part, theengaging part is provided on the top or bottom of the elastic member,and the engaging part is formed to face the electric vehicle The innerside wall of the quick-change bracket or the outer side wall of thequick-change battery box of the electric vehicle is bent.
 9. The elasticmember according to claim 1, wherein the elastic member is fixed to theinner wall of the quick-change bracket or the outer wall of thequick-change battery box of the electric vehicle through a threadedmember.
 10. A limiting member, characterized in that the limiting memberis used to cooperate with the elastic member according to any one ofclaims 1-9, and the elastic member is arranged on the inner side wall ofthe quick-change bracket and the quick-change bracket. One of the outerwalls of the battery box, the limiting member is arranged on the otherof the inner wall of the quick-change bracket and the outer wall of thequick-change battery box.
 11. The limiting member according to claim111, wherein the limiting member comprises a positioning surface and aguiding surface, the positioning surface is used to abut against theelastic member, and the guiding surface is outward from the positioningsurface Extend protrusions.
 12. The limiting member according to claim11, characterized in that, the limiting member comprises at least twoguiding surfaces, and the two guiding surfaces are respectively arrangedopposite to the two sides of the positioning surface and extend alongthe vertical direction, A sliding passage for the elastic member toslide in is formed between the guiding surface and the positioningsurface.
 13. The limiting member according to claim 11, wherein aconnection surface is provided between the guide surface and thepositioning surface, and the connection surface is an arc-shapedsurface.
 14. A limit guide device, characterized in that it comprisesthe elastic member according to any one of claims 1-9 and the limitmember according to any one of claims 10-13.
 15. A quick-change bracket,characterized in that the inner wall of the quick-change bracket isprovided with one or more elastic members according to any one of claims1-9 or any one of claims 10-13 The limiting member.
 16. A quick-changebattery box, characterized in that, the outer wall of the quick-changebattery box is provided with one or more elastic members according toany one of claims 1-9 or any one of claims 10-13 One of the limitingmembers.
 17. An electric vehicle, characterized in that it comprises thequick-change bracket as claimed in claim 15 and the quick-change batterybox as claimed in claim 16, when the elastic member is arranged on thequick-change bracket and the battery When one of the boxes is used, thelimiting member is arranged on the other of the quick change bracket andthe battery box.
 18. The electric vehicle according to claim 17,characterized in that, when the quick-change battery box is loaded intothe quick-change bracket, the elastic member is pressed by the limitingmember to deform.
 19. The electric vehicle according to claim 17,wherein the elastic member has a pre-compressed dimension e, a thicknessc of the elastic member, and a groove depth of the limiting member d,wherein c=d+e; Wherein, the pre-compressed size is the compressed sizeof the elastic member when the quick-change battery box is loaded intothe quick-change bracket.
 20. The electric vehicle according to claim17, wherein: The limiting member includes a positioning surface and aguiding surface, the positioning surface is used to abut against theelastic member, and the guiding surface extends outward from thepositioning surface to protrude; The limiting member includes at leasttwo guiding surfaces, the two guiding surfaces are respectively arrangedopposite to the two sides of the positioning surface, and extend alongthe vertical direction. a sliding channel into which the elastic memberslides; The distance between the side of the elastic member and theguide surface is a reserved gap t, the width of the elastic member is a,the horizontal replacement stroke of the quick-change battery box is s,and the distance between the guide surface The distance between them isb, b=a+2t+s.
 21. The electric vehicle according to claim 17, whereinwhen the quick-change battery box is loaded into the quick-changebracket, there is a gap between the outer side wall of the quick-changebattery box and the inner side wall of the quick-change bracket The gapis K, the thickness of the limiting member is F, and K−F is greater than0 and less than
 2. 22. The electric vehicle according to claim 17,wherein: The limiting member includes a positioning surface and aguiding surface, the positioning surface is used to abut against theelastic member, and the guiding surface extends outward from thepositioning surface to protrude; The limiting member includes at leasttwo guiding surfaces, the two guiding surfaces are respectively arrangedopposite to the two sides of the positioning surface, and extend alongthe vertical direction, a sliding channel into which the elastic memberslides; The battery box is provided with a lock shaft, the quick-changebracket is provided with a lock seat, and the lock seat is provided witha lock groove for engaging with the lock shaft, and the lock grooveincludes a rising section and a locking section, the locking sectionextends horizontally from the ascending section toward the lockingdirection, when the lock shaft is located in the ascending section, theguide surface of the elastic member and the limiting member facing thelocking direction The distance is greater than the distance that thelock shaft moves from the ascending section to the locking position inthe locking section.